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fix divide by zero

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This commit is contained in:
James McClure 2019-10-22 13:58:51 +02:00
commit 64e7b1211a
1 changed files with 2 additions and 5 deletions
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7
analysis/SubPhase.cpp
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@ -278,15 +278,12 @@ void SubPhase::Basic(){
dir_y = Fy/force_mag;
dir_z = Fz/force_mag;
}
if (Dm->BoundaryCondition > 0 ){
// compute the pressure drop
double pressure_drop = (Pressure(Nx*Ny + Nx + 1) - 1.0) / 3.0;
double length = ((Nz-2)*Dm->nprocz);
force_mag -= pressure_drop/length;
double length = ((Nz-2)*Dm->nprocz());
force_mag += pressure_drop/length;
}
if (force_mag == 0.0){
// default to z direction
dir_x = 0.0;